作者: Shu Minakuchi , Yoji Okabe , Nobuo Takeda
关键词: Composite material 、 Layer (electronics) 、 Adhesive 、 Honeycomb 、 Optoelectronics 、 Fiber Bragg grating 、 Core (optical fiber) 、 Reflection (physics) 、 Optical power 、 Materials science 、 Optical fiber
摘要: The authors developed new techniques to detect inside damages in honeycomb sandwich structures using small-diameter optical fiber sensors. We embedded sensors the adhesive layer between core and facesheet. From a decrease transmitted power change form of reflection spectra from Bragg grating (FBG) sensors, debonding impact damage could be detected sensitively real-time.